18227087 has 2 divisors, whose sum is σ = 18227088. Its totient is φ = 18227086.

The previous prime is 18227081. The next prime is 18227093. The reversal of 18227087 is 78072281.

It is a balanced prime because it is at equal distance from previous prime (18227081) and next prime (18227093).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18227087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18227081) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113543 + 9113544.

It is an arithmetic number, because the mean of its divisors is an integer number (9113544).

Almost surely, 2^18227087 is an apocalyptic number.

18227087 is a deficient number, since it is larger than the sum of its proper divisors (1).

18227087 is an equidigital number, since it uses as much as digits as its factorization.

18227087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18227087 is about 4269.3192665810. The cubic root of 18227087 is about 263.1716411998.

The spelling of 18227087 in words is "eighteen million, two hundred twenty-seven thousand, eighty-seven".